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L91 ICD-10-CA category: Hypertrophic disorders of skin

L91 isn’t a code on its own. Choose one of the 3 codes beneath it, the one the documentation supports.

Official description

L91

Hypertrophic disorders of skin

ICD-10-CA · Canada

Codes in L91

L91 isn’t a code on its own. Open the code that matches what the note documents.

L91.0Hypertrophic scarL91.8Other hypertrophic disorders of skinL91.9Hypertrophic disorder of skin, unspecified

Notes for L91

As CIHI prints them, with any note L91 takes from the headings above it.

Excludes

Conditions classified elsewhere.

  • Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)lipomelanotic reticulosis (I89.8)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)systemic connective tissue disorders (M30-M36)From Chapter 12: Diseases of the skin and subcutaneous tissue (L00-L99)

Where L91 sits

  1. 1ChapterChapter 12: Diseases of the skin and subcutaneous tissue (L00-L99)
  2. 2Block L80-L99Other disorders of the skin and subcutaneous tissue
  3. 3Category L91Hypertrophic disorders of skin

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See L91 in the CIHI source

Frequently asked questions

Is L91 a valid ICD-10-CA code?

No. L91 (Hypertrophic disorders of skin) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 3 codes; record the one the documentation supports.

Where is L91 in ICD-10-CA?

L91 sits under L80-L99 Other disorders of the skin and subcutaneous tissue, within Chapter 12: Diseases of the skin and subcutaneous tissue (L00-L99).

What coding notes apply to L91?

ICD-10-CA lists Excludes notes for L91, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside L91

L80VitiligoL81Other disorders of pigmentationL82Seborrhoeic keratosisL83Acanthosis nigricansL84Corns and callositiesL85Other epidermal thickeningL86Keratoderma in diseases classified elsewhereL87Transepidermal elimination disordersL88Pyoderma gangrenosumL89Decubitus [pressure] ulcer and pressure areaL90Atrophic disorders of skinL92Granulomatous disorders of skin and subcutaneous tissueL93Lupus erythematosusL94Other localized connective tissue disordersL95Vasculitis limited to skin, not elsewhere classifiedL97Ulcer of lower limb, not elsewhere classifiedL98Other disorders of skin and subcutaneous tissue, not elsewhere classifiedL99Other disorders of skin and subcutaneous tissue in diseases classified elsewhere